calculate the mass of Oxygen gascalculate the mass of Oxygen gas whose volume is 320 ml at 17 degree Celsius and 2 atmospheric pressure
Answers
Answer:
1.24atm
Explanation:
First, let's determine the number of mole of oxygen gas.
Using
n
=
m
M
:
⇒
n
(
O
)
=
(
32.00
2
×
15.99
)
mol
⇒
n
(
O
)
=
(
32.00
31.98
)
mol
∴
n
(
O
)
=
1.00
mol
Then, let's convert the units of the given temperature to
K
:
⇒
T
(
∘
C
)
=
T
(
K
)
−
273.15
⇒
30.00
=
T
(
K
)
−
273.15
⇒
T
(
K
)
=
303.15
∴
30.00
∘
C
=
303.15
K
Now, let's substitute all relevant values into the equation
P
V
=
n
R
T
:
⇒
P
×
20.0
L
=
1.00
mol
×
0.0821
L atm mol
−
1
K
−
1
×
303.15
K
⇒
P
×
20.0
=
1.00
×
0.0821
atm
×
303.15
⇒
P
=
(
0.0821
×
303.15
20.0
)
atm
∴
P
=
1.24
atm
Therefore, the pressure exerted by the oxygen gas is
1.24
atm
.
Answer:
0.86gm is the final answer by using pv=nrt equation